@User: SkyWater has a "built-in" ".option scale 1e-6" in the model files for the process, which means that all dimensions are automatically in units of microns; e.g., "w=1" means a 1 micron width. But magic (like a number of tools) wants to output dimensions with a "u" at the end, and scale things to microns itself. My (definitely somewhat kludgy) workaround for this was to multiply the dimensions up by 1E6 in magic, so that "W=1.0E6u" would then come out to 1 micron. My preferred solution is to get rid of the .option scale in the model files, but that's a lot easier said than done.

Tim, how do you get magic to use a specific scale?

Hi @Tim Edwards. I am having an error on line 47 while simulating myinverter1.sp(netlist - magic) through ngspice with the help of test bench invtest.sp. defining all inputs and outputs with delays for the inverter.

You can't use "wrdata" as ".wrdata". You have to put it inside a ".control ... .endc" block.